protected UnivariateFunction[] createFunctions() {
return new UnivariateFunction[] {
new Power(2.0), new Exp(), new Expm1(), new Log(), new Log10(),
new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
new Inverse(), new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
new Floor(), new Rint(), new Signum(), new Ulp()
};
}